Unable to display FeatureSet in Map Widget

Question

Hi all, I am trying to display a FeatureSet (arcgis.features.FeatureSet) object on the ArcGIS API for Python map widget (arcgis.gis.GIS.map.add_layer) in Jupyter Notebook. I have two FeatureSet objects: * obtained while querying a layer (query_resp_from_x) * constructed from arcgis.features.Feature objects (feature_set) This is the code I am using to create the feature_set object: from arcgis.features import Feature, FeatureSet, FeatureCollection attributes = [{'FID':1, 'some_field':'some_val', ...}, {'FID':2, 'some_field':'some_val', ...}, ...] features_from_geom = [{"paths": [[...]]}, {"paths": [[...]]}, ...] # len(attributes) = len(features_from_geom) = 5 features = list() counter = len(attributes) for idx in range(counter): features.append(Feature(geometry=features_from_geom[idx], attributes=attributes[idx])) # here, query_resp_from_x is just a query response from layer X, which in itself is a FeatureSet feature_set = FeatureSet( fields=query_resp_from_x.fields, geometry_type=query_resp_from_x.geometry_type, spatial_reference=query_resp_from_x.spatial_reference, object_id_field_name=query_resp_from_x.object_id_field_name, global_id_field_name=query_resp_from_x.global_id_field_name ) ‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ Then, I created a map widget in the same notebook and added both the FeatureSet objects to it: from arcgis.gis import GIS gis_obj = GIS('http://my_portal', 'my_user') map_obj = gis_obj.map() map_obj.add_layer(feature_set) map_obj.add_layer(query_resp_from_x) map_obj‍‍‍‍‍‍‍‍‍‍‍‍‍ The map displayed only the query response FeatureSet (query_resp_from_x). Neither the FeatureSet I constructed (feature_set) was displayed, not an exception was raised. I tried adding some rendering information to the FeatureSet and construct a FeatureCollection from it and display it on map, to no avail. Can someone tell me what is wrong with this approach? (P.S.: I converted both the FeatureSet objects (feature_set and query_resp_from_x) and compared them. They were exactly the same except for changes in values. I am attaching both the dict objects as JSON files for your reference.) query_resp_from_x.json.zip feature_set.json.zip identify.txt.zip Screen Shot 2013-10-05 at 11.55.29 PM.png Tapestry_of_blazing_starbirth_card_full.jpg ArcGISPro_g1VJ2VJIzd.gif

simoxu · Accepted Answer

I can't identify any issue in your code, but maybe you can try mapview.draw function: arcgis.widgets module — arcgis 1.5.0 documentation I tried to construct a FeatureSet out of the buffer result, then successfully displayed it with the draw function. It seems you need to use WGS84 (EPSG4326) spatial reference. and here is the code snippet: #important, project the location before buffering _p=project([p],in_sr=sr2,out_sr=sr)[0] fill={"type": "esriSFS", "style": "esriSFSSolid", "color": [255,0,0,255]} buf=buffer(geometries=[_p],in_sr=sr,distances=[500],unit='Meters') #this is the key buf[0]['spatialReference']=sr f=Feature(buf[0]) fset=FeatureSet([f],spatial_reference=sr) map1.clear_graphics() map1.draw(fset,symbol=fill) map1.draw(p,symbol=symbol)‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ If you want to see the full post, here is the link. how to draw a buffer on the map?? Please note there are better ways to do buffer and visualize the result, I was doing it just for some test at that point of time